Fig. 1. Schematic diagram of structure. (a) Schematic diagram of hybrid metasurface structure; (b) enlarged cross-sectional view of hybrid metasurface unit cell in X-Z plane

Fig. 2. Transmission spectra of three different structures: (a) Individual C3 unit cells, (b) individual circular-ring-aperture unit cells, and (c) hybrid metasurface structure when polarization of incident light is along X-direction

Fig. 3. Transmission spectra corresponding to influence of different values of a₂ (100-160 nm) on Fano resonances when polarization of incident light is along X-direction.

Fig. 4. Transmission spectra corresponding to different values of a₁ when a₂and a₃ are set as (a) 100 nm, (b) 130 nm, and (c) 160 nm, respectively, under polarization of incident light along X-direction. (d), (e), and (f) indicate transmittance of peak-I、peak-Ⅱ, and peak-Ⅲ with different a₁ varies as sine and linear functions, respectively

Fig. 5. Designability of near-infrared plasmonic Fano resonances in hybrid metasurface. (a) Transmission spectra corresponding to different inner radius (R₁) under direction of incident light polarization along X-direction; (b) variation of width (W_FR) and depth (D_FR) of Fano resonance with inner radius, as well as their sine and exponential functions fitting; (c) values of peak-IV versus inner radius and their sine fitting